Apparatus for casting sash weights



G. W.. GILLESPIE. APPARATUS FOR CASTING SASH WEIGHTS. APPLICATION FILED MAY 25. 1921.

Patentd 0m. 24, 1922.

l Ii 11f? Z0 19 I J A G. W. GILLESPIE. APPARATUS FOR CASTING SASH WEIGHTS.

APPucmwn HLEO MAY 25. 192l- Patented 001;. 24, 1922.

Z SHEETS-SHEET 2.

Patented Oct. 24, 1922.

ire-n STA-T ns r GEORGE W. amnesia, or romtsurnwmtv, PENNSYLVANIA.

' APPARATUS roe oasr rno sass wnreirrs.

hpplication filed Hay 25,

To all whom itma/g coaccmn u Be it known that .I, Gannon W. finesse-1a, a, citizen of the United States, residing at Punxsutawney, n the county of Jefferson and State of Pennsylvania, have -invented certain new and useful Improvements in Apparatus for Casting Sash Weights, of which the following is a specification This invention relatesto rnolds and patterns for metal casting; and more. especially for the reduction of seamlesssesh'weights.

The 0 jectsof the invention are; I I First, to .so construct cooperating pattern, draw plate and core asto ,forma finished mold with the minimum of steps sald mold adapted to cast a maximum nunaber of uniform, flawless and seamless sash weights with well formed and rounded ends and having at one or both of said ends smooth staples firmly attached or incorpcreated w th the cast metal and identifying characters designating the load of the sash weight. I

Second, to construct the cooperating parts. of the apparatus to form the moldso that the core is not inserted or projectedinto the mold. cope, .o'r drag, thereby avo d1 ng any possibility of. detaching or displacing the sand of the moldor pushing mold any sand after the pattern is withdrawn during the adjustment .or placement ofsaicl core and insuring a smooth mold through out and perfect castings. I

Third, to construct the cooperating parts of the appartus so that when the pattern is withdrawn from the mold and the core isput in position. the mold is complete a nd 'ushed..-.i t po ti e o into the mold and 'orms the copaof the complete mol Fourth,

andthe core formingthe' cope is in p ace. the gates for conveying the molten metal are removed from the ends of the mold thereby tmablingh the casting of a sash weight having nished,smooth and well formed ends without furthermanipuletion.

Fifth, to construct a pattern havings. plurality of separable and removable units cooperating with a draw plate insuch a manner, so that the number size and type of sash weight ;pattcrns to he molded and cast in any particular flask canshe easily and quickly varied without'skflled la bor and in; a minimum of time.

Sixth, to form :a draw plate-with gate to construct the parts of the .ap-' paratus so that when the mold is com lete 1521. Serial No. 472,884.

forming instrumentalities integrally connectedtherewith and arranged in such a manner with the cooperating pattern, so

vthat the gates enter the completed pattern mold at a point removed from the section ofsaad mold corresponding to the rounded end of the finished sash weight.

Seven'th, to pjrovide a core box adapted to produce a com med cope and core provided withone or more staplesadaptcd to be embedded or incorporated with the ends of .the

sash weight casti s and also means to form on the 'ends of Sci castings load indicating characters.

. Eighth, other objects and advantages of the invention will appear from the detailed construction and arrangement of the appsratus and manner of using the same to be hereinafter described.

Theinvention consists of structural char acteristics and relative arrangements of parts which will be hereinafter more fully disclosed and articularly pointed out in the appended c aims.

In the two sheets of drawings in which similar reference characters indicate the some parts in the several figures.

Fi ure l, is a longitudinal section of the mp1 within the flask after the metal has been poured.

Figure 2,.is a. bottom plan view of the core Figure 3 is a longitudinal sectional view of the flash with the pattern in lace to receive the sand and taken on line 0f Fig. 4.

Figure 4, is a top plan view of Fig. 3.

Fl ire 5, is a top plan view of the core box or making the core shown in Fi 2.

v Figure 6, is a section on line VIR7I of Fi a o.

Figure 7, is a section of the draw plate and taken on line VIIVII of Fig. 4.

Figure 8 is a section of the core and taken on line VIII-VHI of Fig. 2.

Figure 9-is a perspective view of a finished sash weight having a staple at each end as made'by the apparatus, and

Figure 10, is a perspective view of a Saab weight having only one end provided with a staple and of shorter length and re duced weight.

Referring to Figs. 1, 3 and 4, 10 is the flask which in this case is s more and rectangular in cross-section an of a size to cast four sash weights and while I have illus- -III trated the invention as appliedin making four, this number may be decreased or multiplied without in any way changing the essential and novel features of the present invention. One end of the bore or inner sides of the flask 10 is inclined outwardly as shown at 11, for the purpose of receiving the correspondingly shaped draw plate and frame carrying the patterns to be presently described. 12 is a frame having one or a plurality of threaded recesses 13 which are engaged bythe threaded ends 13 of a series of removable patterns 14 which in the present instance are cylindrical in shape and rounded at their detached ends 15 as shown in Fi s. 3 and 4. Said atterns 14 may be of ilferent lengths an provided at their ends with or without characters 16, and oppositely disposed circular recesses IF for the reception of staples 1811s desired, depending upon weight and variety of sash weights to be cast. 19 is a draw late having one or more openings 20 simi arly disposed and arranged as the threaded reoesses 13' in frame 12 and of such contour and diameter as to snugly fit around the patterns 14 and permit said patterns to readily slide through said openings 20 and be withdrawn from the draw plate 19, when so desired. Attached to' the inner side and centrally disposed on the draw plate is a projection or enlargement 21 which is preferably of star-shape, see Figs. 3'and 7, and havin its outer ends in juxtaposition and in sli 'ng contact with the cylindrical side of each pattern 14, near the end secured to the frame 12 as shown in Figs. 3 and 4. and adapted to form the gates'21', see Fig. 1,.

in the mold as will be hereinafter more fully understood. The outer edges or sides of the frame 12 and plate 19 are beveled at such an angle as to properl fit within the outwardly inclined inner si cs 11 of the flask 10 and assume the position indicated in Fig. 3.

22 1s a bottom or floor plate common in this class of inventions for supporting the weight of the flask and properly sustaining the frame 12 and attached patterns14 surrounded by the draw plate 19 within the flask 10 as shown in Fig. 3.

Referring to Figs. 5 and 6, 23 is the core box which is provided with a recess 24, preferably square in shape and of a depth corresponding to the combined thicknesses of the frame 12 and draw plate 19, and its side walls 25 inclined at such an angle as to form a core of the same size, shape and beveled edges as the combined and superimoscd frame 12 and plate 19 as shown in lg. 3. Said core box 23 is provided on the bottom 23 of its recess 24 with a plu rality of circular and rounded projections 26, which are so disposcd and arranged as to register with the openings 20 in the draw plate 19, andgeach of said projections 26 mayor may not be-pro'videdwith a character 27 and diametrically and oppositel disposed sockets 28' adapted to removab y and vertically support a'staple 29, as indicated in dotted lines in Fig. 6. On the bottom 23 and center of the recess 24 is secured a pin 30', adapted to be engaged by the re cemed and smaller end of a removable core box section 31, preferably frusto-conical in shape-and adapted to form the sprue hole oropening 32, see Fig.- 8, in the combined core and cope 33 to be presently described.

The manner of using the core box shown in Figs. 5 and 6 to produce the combined core and cope 33 shown in Fig. 8 is as follows: The staples29 are inserted in the sockets 28 and the core section 31 is adjusted and made to engage the in 30 as shown in Fig. 6, said core box 3 is then properly filled with any suitable mixture for core making and baked as is common in this class or inventions and needs no further 'disclosure,'and after said baking the removable core section 31 is taken out and the core box '23 inverted, and score 33 as shown in Figs. 2'and 8', is obtained in which a central sprue hole or opening 32 is provided, and the curved portion of each of the staples 29 is firmly embedded and il'nmovably held in the body ofthe combined core and cope 33 with its straight ends projecting'therefro'mat a section formed with a semi-spherical recess or depression 34, having a load desi' 'rting character 35, if so desired, as cle illustrated.

The parts being constructed, as herein described, the manner of assembling and using the same is as follows:

Assuming the flask 10 shown in Fig. 3 to be inverted and'the end havin the inner inclined sides 11 is at the top', an the frame 12 with its previously determined and selected sash weight patterns 14? attached thereto and draw plate19j have been assembled as shown'in Fig. 3, said draw plate 19, frame" 12.and patterns 14 are inserted in said desk and the floor or bottom plate 22 is placed on top. The flask 10 containing said draw plate 19, frame 12, floor plate 22, and attached patterns 14 is then inverted and its contents assume the position shown in Fig. 3. Staples 18 are then inserted in the recesses 17 at the ends 15 of said patterns 14 as desired. When the sand is placed within the flask 10 and carefully rammed about the patterns 14, and after so rammed the superfluous sand is scraped oil and a plate 36, such as shown at bottom of Fig. 1 is placed in position to re ister with the open top or end of flask 10. The flask 10 is then again inverted, the frame 12 after slightly tapping it, is carefully lifted from the end of the flask, which simultaneously with .drawsall the patterns 14 from the sand and through the o enings 20 in the drawplate 19, and leaves em edded in the sand at the bottom of each pattern mold 37 the curved portions of all previously placed staples 18 with their straight ends projectin into the molds, as shown in Fig. 1, and a an impression of the cles' ating characters 16, as will be readily 'un erstood. Should it be found that through some accident or inadvertence any foreign substance or sand has been detached or fallen into the molds 37, the flask 10 with its mold and draw plate 19 can be turned over and said sand or substance can readily be made to drop out, and the flask returned to its former position without in any way injuring the mold. After the foregoing operations the-draw plate is removed from the flask and the combined core and cope 33 are shown in Fi 8, is inserted into beveled end 11 of the this: and resting on the molded sand in the position shown in Fig. 1, which completes the mold and ready to receive the molten metal. The molten metal is poured into the s rue hole or opening 32 an asses by way 0 the gates 21 into' each of e pattern molds 37 and said metal at either or both ends of said molds, after cooling becomes firmly united with the sta les 18 and 29' at said ends and embedde in the finished sash weights I59 and 40 as shown in Figs. 1, 9 and 10, in which Fig. 9 shows a sash weight with a staple at each of its ends, while Fig. 10 shows a staple at only one end; and said sash wci hts may be also formed with desi nating ciaracters 1 at either or both en s,

depending on what characters 16 and 27 are em loyed 1n the completed mold, and if ligliter or heavier sash weights are desired the removable patterns 14 can be quickly detached from the frame 12 and others readily substituted therefor, as will be fully under stood and needs no further disclosure.

After the mold is cooled-and the metal set, it is removed from the flask when by the usual method ofibrealring away the sand from the casting, the combined cope and core will readily disintegrate and leave the staples 18 and 29 firmly embedded and attached to the cast sash weights, and the superfluous metal attached to said group of sash weights formed by spruc opemng and tes can be quickly detached therefrom wit out in any way marring the contour or smoothness of the ends or sides of the sash weights, for the reason that the gates are of small cross sectional area and connect with the sides of the sash weights and removed from their ends.

The cast sash wei 'hts can be finished by tumbling in a rumb le, if so desired, when uniform and seamless sash weights will have been produced having well rounded and smooth ends provided with rigid staples and weight designating characters.

From the foregoing disclosure of the construction and operation of the improved apparatus, it will be seen that all the objects and advantages recited in the statement of invention have been fully and efficiently carried out, and while I have shown my preferred form, many changes will readily suggest themselves and yet lie within the scope of the structure as expressed in the claims, whether the apparatus is operated manually or mechanically, and I also contemplate using the same, whether two, four, or any other number of sash weights are cast in a sin lo flask and making of sash weights having staples at one or both ends, or with weight designating characters at one or both ends or without such characters.

What I claim is:

1.111 a mold for the casting of sash weightsfthc combination oi a green sand drag containing the major portions of the mold cavities and a dry sand combined cope and corerestin; on said green sand drag andprovided with a pouring gate and cavities registering with the mold cavities and all enclosed in the same one-piece flask.

2. In the mold for the casting of sash weights, the combination of a green sand drag containing the major portions of the mold cavities and a staple at the bottom oi a mold cavity and a dry sand combined cope and core resting on said green sand drag and provided with a pouring gate and rarities registering with the mold cavities and all enclosed in the same one-piece flask.

3. In a, mold for casting sash weights, the combination of a green sand drug containing the major portions of the mold cavities and a dry sand combined cope and core resting on said green sand drag and provided with a pouring gate, and cavities and staples in said cavities registering with the mold cavities and all enclosed in the same one-piece flash.

4. In a mold-for casting sash weights, the combination of a green sand drag containing the major portions of the mold cavities and a dry sand combined cope and core resting on said green sand drag and provided with a pouring gate. and cavities and weight designating characters and staples in said cavities registering with the mold cavities and all enclosed in the same one-piece flask.

In testimony whereof I utlix my signature.

GEORGE W. GILLESPIE. 

